Construction device for water drilling cast-in-place pile of engineering construction and use method thereof

Abstract

The application relates to the technical field of water construction devices, and discloses a water drilling and pouring pile construction device for engineering construction and a use method thereof. The structure comprises a rotary digging mechanism, a mechanical small arm, a rotator, a mechanical large arm and a digging main body. In the application, the soil automatically enters the upper part of the opening and closing mechanism. When the sleeve is lifted, the soil is automatically blocked by the opening and closing mechanism, the effect of automatically discharging the soil at the drilling position in the rotary digging process is realized, the sleeve continuously rotates in one direction to form an efficient drilling, the problem that the efficiency of the sleeve is low in the forward and reverse intermittent rotary digging is solved, when the first cylinder is lifted upward, the second cylinder and the first cylinder slide relative to each other, the water outlet is connected with the corresponding flow guide structure, most of the soil is blocked from flowing upward by the staggered distribution of the plane plates, the filter plate blocks the large-particle impurities and the sandy soil, most of the water is discharged from the water outlet through the flow guide structure, and the water is prevented from being lifted and transferred together with the soil when the soil is dug.

Description

Technical Field

[0001] This invention belongs to the technical field of underwater construction equipment, specifically relating to an underwater drilling and grouting pile construction device and its usage method. Background Technology

[0002] When constructing cast-in-place piles on water, underwater drilling and pouring are required. This is done using a construction device fixed to the hull of a ship. During drilling, a rotary drilling rig is used to drill downwards, and an inner casing is placed in the hole. When pouring the cast-in-place pile, the concrete flows into the adjacent steel casing through the overflow hole at the top of the inner casing. It is then pumped onto a mud boat by a mud pump. The permanent steel casing for the cast-in-place pile is driven into the water using a driving and pulling machine standing on the deck of the ship. The land route includes riverside parks, green spaces, walkways, military management areas, and the Zhiyuan Villa area. There are no access roads on land. The steel casing, reinforcing cage, and concrete for the cast-in-place pile are all transported to the construction site by water. The hole for the cast-in-place pile is formed by a rotary drilling rig standing on the ship (a combined mechanical pile-ship system) on the water.

[0003] However, during rotary drilling, most of the soil remains inside the pipe. When the soil is pulled out, there is a hinged plate at the bottom of the pipe that supports the soil. Current technology uses circuitry to control the opening and closing of this plate. However, during rotary drilling, the circuitry controlling the hinged plate is prone to tangling, which means that the rotary drilling can only be done intermittently in both forward and reverse directions, making continuous rotation difficult. This results in low rotary drilling efficiency and damage to the control circuitry of the hinged plate due to repeated rotation and twisting. Furthermore, after the pipe is rotary drilled, most of the water will enter the pipe along with the soil and be carried out. Excessive water can dilute the soil in the pipe, causing it to become too fluid and affecting soil storage. Summary of the Invention

[0004] To address the aforementioned problems, this invention discloses a construction device for underwater bored piles and its usage method. The device has a scientific structure and is easy to use. During construction, water is drained to the outlet through a guide structure inside the sleeve, which facilitates the outflow of water when the sleeve is lifted, thus preventing most of the water from being lifted and transferred with the soil during excavation.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows:

[0006] A construction device for underwater bored piles in engineering construction includes a rotary drilling mechanism, a mechanical arm, a rotator, a mechanical boom, and a digging body. The mechanical boom swings up and down inside the digging body, the mechanical arm swings hydraulically at the outer end of the mechanical boom, the rotator rotates at the lower end of the mechanical arm, and the digging body is equipped with a control room. The mechanical arm, rotator, and mechanical boom are driven by electrical signals from the control room, and the rotator clamps the rotary drilling mechanism to rotate downwards.

[0007] The rotary drilling mechanism includes an opening and closing mechanism, a sleeve, a fixed block, a sliding plate, a central rod, and a track. The central rod is fixed to the lower end of the fixed block, and the central rod is located at the central axis of the sleeve. The sliding plate, which is fixed to the outside of the central rod, slides on the track inside the sleeve. The opening and closing mechanism is fixed to the lower end of the central rod. When the fixed block rotates downwards, the underwater mud blocks the opening and closing mechanism and causes it to tilt upwards to open and close.

[0008] Furthermore, the opening and closing mechanism is provided with a rotating plate, a conversion mechanism and a sealing strip. There are four conversion mechanisms and four rotating plates, which are distributed in a circular array on the outside of the central rod. The rotating plate is hinged and rotates 60° on the outside of the central rod. The sealing strip is attached to the inside of the sleeve, and the outer side of the rotating plate is elastically pressed against the sealing strip. The side of the rotating plate is provided with a sliding groove corresponding to the side of the conversion mechanism.

[0009] Furthermore, the conversion mechanism includes a spring, a transmission structure, a force-bearing rod, and a trapezoidal plate. The force-bearing rod slides along a 10° inclined track within the trapezoidal plate. One end of the spring is fixed to the outside of the force-bearing rod, and the other end is fixed to the inside of the trapezoidal plate. When the force-bearing rod slides along the track, it compresses the spring, and the elasticity of the spring causes the force-bearing rod to press against the transmission structure, causing the transmission structure to rotate counterclockwise within the trapezoidal plate. The trapezoidal plate is located inside the sleeve. The outer side of the central rod has a hollow groove corresponding to the outer end of the force-bearing rod. When the central rod moves downward, the force-bearing rod slides from the hollow groove to the outside of the central rod, compressing the spring and causing the force-bearing rod to elastically press against the lower end of the transmission structure. At this time, the transmission structure rotates counterclockwise, causing the transmission structure to lift the rotating plate and tilt.

[0010] Furthermore, the transmission structure includes a rotating ring, a metal plate, a force-bearing plate, and a sliding rod. The force-bearing plate and the metal plate are at right angles. One end of the force-bearing rod presses down on the force-bearing plate, causing the metal plate and the force-bearing plate to rotate within the trapezoidal plate around the rotating ring. The sliding rod is located at the outer end of the metal plate and slides in a groove on the side of the adjacent rotating plate, causing the rotating plate to tilt when it rotates.

[0011] Furthermore, the sleeve is provided with a water outlet, a first cylinder, a second cylinder, and a flow guiding structure. The water outlet is inclined at 50° inside the first cylinder, and the flow guiding structure corresponding to the water outlet is inclined inside the second cylinder. The second cylinder and the first cylinder slide vertically together. When the first cylinder moves upward, the second cylinder slides downward under gravity, and the flow guiding structure connects with the water outlet corresponding to the water outlet.

[0012] Furthermore, the flow guiding structure is provided with a flat plate, a flow hole and a filter plate. The flat plates are horizontally staggered in the flow hole, and a filter plate is provided between the two lowest flat plates to block the water flowing upward from below.

[0013] A method for using a drilling and grouting pile construction device for underwater engineering construction, based on the above-mentioned drilling and grouting pile construction device for underwater engineering construction, the specific method of use includes the following steps:

[0014] S1: The mechanical boom and mechanical arm are controlled by the cab on the excavator to push the rotary digging mechanism at the lower end of the rotary unit, and the rotary unit is controlled to rotate the rotary digging mechanism, so that the rotary digging mechanism rotates downward. At this time, the opening and closing mechanism causes the rotating plate to tilt upward and rotate under the resistance of the underwater mud, and the fixed block slides vertically in the track through the outer slide plate of the central rod, so that mud and water enter the upper part of the opening and closing mechanism.

[0015] S2: When the fixed block moves upward, the slide plate slides upward inside the track and drives the sleeve to leave the water. At this time, the opening and closing mechanism returns to the horizontal state under the gravity of the soil above and blocks the soil.

[0016] S3: After the soil is excavated, the soil moves the opening and closing mechanism downward under gravity, while the lower end of the sleeve is placed on the ground. Through the obstruction of the ground, the hollow groove of the central rod is disengaged from the corresponding position of the force rod. Then, the outer side of the central rod presses against the force rod, and the force rod squeezes the transmission structure under the elasticity of the spring, and drives the transmission structure to rotate.

[0017] S4: The rotation of the transmission structure causes the slide bar to slide within the adjacent rotating plate, and drives the rotating plate to tilt upward. At this time, the rotating plate squeezes the soil upward and causes the rotating plate and the conversion mechanism to misalign, so that the soil falls downward from the misaligned position.

[0018] The beneficial effects of this invention are as follows:

[0019] In this invention, under the weight of the soil, the central rod moves downward with the fixed block, and the hollow groove disengages from the corresponding position of the outer end of the force-bearing rod, so that the outer side of the central rod squeezes the force-bearing rod, which facilitates the upward tilting and rotation of the rotating plate. This causes the metal plate to drive the sliding rod to slide in the groove on the side of the rotating plate. At this time, the rotational force of the metal plate is transformed into a lifting support force on the rotating plate, and the rotating plate automatically tilts and opens upward, which facilitates the discharge of soil.

[0020] In this invention, soil automatically enters above the opening and closing mechanism. When the sleeve is lifted, the soil is automatically blocked by the opening and closing mechanism. After the sleeve is placed on the ground, the opening and closing mechanism automatically opens and closes to discharge the soil. This achieves the effect of automatically discharging soil from the drilling location during rotary drilling, avoiding the obstruction of soil by the circuit control and the inconvenience of discharge. It allows the sleeve to rotate continuously without causing rotation or twisting of the circuit control line, forming a high-efficiency drilling with continuous rotary drilling in one direction, preventing the problem of low efficiency in intermittent rotary drilling in both forward and reverse directions.

[0021] In this invention, when the sleeve is inserted downwards into the soil, the outlet and the guide structure are misaligned. At this time, the sleeve forms a water-blocking effect on the outside. When the first cylinder is lifted upwards, the second cylinder slides against the first cylinder, connecting the outlet to the corresponding guide structure. At this time, the water inside the second cylinder will be discharged to the outlet through the guide structure and flow out, thus facilitating the flow of water from the inside when the sleeve is lifted. At this time, the water surges upwards from the guide structure, and the staggered flat plates block most of the soil from surging upwards. The filter plate blocks large particles of impurities and sand to a certain extent. Then, most of the water is guided from the guide structure to the outlet for discharge, avoiding the transfer of most of the water along with the soil when digging. Attached Figure Description

[0022] Figure 1 This is an overall diagram of the present invention.

[0023] Figure 2 This is a side view of the rotary drilling mechanism.

[0024] Figure 3 This is a plan view of the opening and closing mechanism.

[0025] Figure 4 A side view of the three-dimensional conversion mechanism with the central rod.

[0026] Figure 5 This is a three-dimensional schematic diagram of the conductive structure.

[0027] Figure 6 This is a partial side view of the sleeve.

[0028] Figure 7 This is a side view of the flow guide structure.

[0029] List of identifiers in attached diagrams:

[0030] Rotary drilling mechanism-1, mechanical arm-2, rotator-3, mechanical boom-4, digging body-5, opening and closing mechanism-11, sleeve-12, fixing block-13, sliding plate-14, center rod-15, track bar-16, rotating plate-111, conversion mechanism-112, sealing strip-113, spring-121, transmission structure-122, force-bearing rod-123, trapezoidal plate-124, rotating ring-21, metal plate-22, force-bearing plate-23, sliding rod-24, water outlet-31, first cylinder-32, second cylinder-33, flow guiding structure-34, flat plate-41, flow hole-42, filter plate-43. Detailed Implementation

[0031] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0032] As shown in the figure, the underwater drilling and grouting pile construction device of the present invention includes a rotary drilling mechanism 1, a mechanical arm 2, a rotator 3, a mechanical boom 4, and a digging body 5. The mechanical boom 4 swings up and down inside the digging body 5, the mechanical arm 2 swings hydraulically at the outer end of the mechanical boom 4, the rotator 3 rotates at the lower end of the mechanical arm 2, and the digging body 5 is provided with a control room. The mechanical arm 2, the rotator 3, and the mechanical boom 4 are driven by electrical signals from the control room, and the rotator 3 clamps the rotary drilling mechanism 1 and rotates downward.

[0033] The rotary drilling mechanism 1 includes an opening and closing mechanism 11, a sleeve 12, a fixing block 13, a sliding plate 14, a central rod 15, and a track 16. The lower end of the fixing block 13 is fixed to the central rod 15, and the central rod 15 is located at the central axis of the sleeve 12. The sliding plate 14, which is fixed to the outside of the central rod 15, slides on the track 16 inside the sleeve 12. The opening and closing mechanism 11 is fixed to the lower end of the central rod 15. When the fixing block 13 rotates downwards, the underwater mud blocks the opening and closing mechanism 11 and causes it to tilt upwards to open and close.

[0034] Furthermore, the fixing block 13 is fixed and driven by the lower end of the rotator 3, and when the central rod 15 at the lower end of the fixing block 13 drives the outer slide plate 14 to slide on the track 16, the sleeve 12 on the outer side of the track 16 moves accordingly. Then, when the fixing block 13 moves downward, the sleeve 12 is inserted into the soil first, and then the soil generates an upward thrust on the lower part of the opening and closing mechanism 11 again.

[0035] The opening and closing mechanism 11 includes a rotating plate 111, a conversion mechanism 112, and a sealing strip 113. There are four conversion mechanisms 112 and four rotating plates 111, which are arranged in a circular array on the outside of the central rod 15. The rotating plate 111 is hinged to rotate 60° on the outside of the central rod 15. The sealing strip 113 is attached to the inside of the sleeve 12, and the outer side of the rotating plate 111 elastically presses against the sealing strip 113. The side of the rotating plate 111 is provided with a sliding groove corresponding to the side of the conversion mechanism 112.

[0036] Furthermore, the sealing strip 113 is made of rubber, which provides a certain degree of sealing to the outside of the rotating plate 111, preventing large gaps from arising during the tilting and rotation of the rotating plate 111. When the rotating plate 111 rotates, the outside of the rotating plate 111 detaches from the sealing strip 113, and... Figure 3 The topmost graphic is a chute, which is distributed on the left and right sides of the rotating plate 111.

[0037] The conversion mechanism 112 includes a spring 121, a transmission structure 122, a force-bearing rod 123, and a trapezoidal plate 124. The force-bearing rod 123 slides along a 10° inclined track within the trapezoidal plate 124. One end of the spring 121 is fixed to the outside of the force-bearing rod 123, and the other end is fixed to the inside of the trapezoidal plate 124. When the force-bearing rod 123 slides along the track, it compresses the spring 121, and the elasticity of the spring 121 causes the force-bearing rod 123 to press against the transmission structure 122, thereby causing the transmission structure 123 to... 2. The trapezoidal plate 124 is set inside the sleeve 12. The outer side of the central rod 15 is provided with a hollow groove corresponding to the outer end of the force rod 123. When the central rod 15 moves downward, the force rod 123 slides from the hollow groove to the outside of the central rod 15, and the force rod 123 compresses the spring 121, causing the force rod 123 to elastically squeeze the lower end of the transmission structure 122. At this time, the transmission structure 122 rotates counterclockwise and causes the transmission structure 122 to lift the rotating plate 111 and tilt it.

[0038] Furthermore, the lower surface of the trapezoidal plate 124 is inclined, which creates an inclined guiding effect on the sleeve 12 towards the central rod 15, causing the soil to move towards the center of the central rod 15, thus preventing the soil from easily accumulating on the outside and affecting its entry into the opening and closing mechanism 11.

[0039] In this invention, when the central rod 15 moves downward following the fixed block 13, the soil exerts an upward pushing force on the rotating plate 111. At this time, the hollow groove on the side of the central rod 15 moves accordingly, and then the hollow groove disengages from the corresponding position of the outer end of the force-bearing rod 123, causing the outer side of the central rod 15 to squeeze the force-bearing rod 123, which facilitates the upward tilting and rotation of the rotating plate 111. Furthermore, the central rod 15 at the rotating connection point of the rotating plate 111 moves downward, while the conversion mechanism 112 remains fixed. Through the rotational force generated by the upward rotation of the transmission structure 122, the left and right ends of the rotating plate 111 generate downward and upward forces, thereby causing the rotating plate 111 to exert upward pressure. The force of the soil facilitates its discharge, so that during the rotary drilling process, the soil automatically enters above the opening and closing mechanism 11. When the sleeve 12 is lifted, the soil is automatically blocked by the opening and closing mechanism 11. After the sleeve 12 is placed on the ground, the opening and closing mechanism 11 automatically opens and closes to discharge the soil, achieving the effect of automatically discharging the soil at the drilling position during the rotary drilling process. This avoids the obstruction of the soil by the circuit control and the inconvenience of discharge, allowing the sleeve 12 to rotate continuously without causing rotational twisting of the circuit control line. This forms a high-efficiency drilling with continuous rotary drilling in one direction by the sleeve 12, preventing the problem of low efficiency in intermittent rotary drilling in both forward and reverse directions.

[0040] The conductive structure 122 includes a rotating ring 21, a metal plate 22, a force-bearing plate 23, and a sliding rod 24. The force-bearing plate 23 and the metal plate 22 are at right angles. One end of the force-bearing rod 123 presses against the force-bearing plate 23, causing the metal plate 22 and the force-bearing plate 23 to rotate within the trapezoidal plate 124 with the rotating ring 21 as the center. The sliding rod 24 is located at the outer end of the metal plate 22 and slides in the groove on the side of the adjacent rotating plate 111, causing the rotating plate 111 to tilt when it rotates.

[0041] Furthermore, the force plate 23 and the metal plate 22 rotate in the gap between the conversion mechanism 112 and the rotating plate 111, while the rotating ring 21 rotates within the trapezoidal plate 124 using a bearing. The force plate 23 is L-shaped, with the bottom part near the inner side of the trapezoidal plate 124 used to contact the pressing force of the force rod 123. The vertical part of the force plate 23 and the metal plate 22 are relatively thin, which facilitates rotation within the gap between the rotating plate 111 and the conversion mechanism 112. This allows the metal plate 22 to drive the sliding rod 24 to slide in the groove on the side of the rotating plate 111. At this time, the rotational force of the metal plate 22 is converted into a lifting support force on the rotating plate 111, causing the rotating plate 111 to automatically tilt upwards and open, facilitating the discharge of soil.

[0042] The sleeve 12 is provided with an outlet 31, a first cylinder 32, a second cylinder 33 and a flow guiding structure 34. The outlet 31 is inclined at 50° inside the first cylinder 32, and the flow guiding structure 34 corresponding to the outlet 31 is inclined inside the second cylinder 33. The second cylinder 33 and the first cylinder 32 slide vertically. When the first cylinder 32 moves upward, the second cylinder 33 slides downward under gravity, and the flow guiding structure 34 connects with the outlet 31.

[0043] Furthermore, the lower end of the first cylinder 32 is L-shaped, and the outer side of the second cylinder 33 is provided with a sliding groove corresponding to the L-shaped position of the first cylinder 32. When the second cylinder 33 slides downward, the L-shaped protruding position of the first cylinder 32 slides in the sliding groove. After sliding, the second cylinder 33 is suspended from the L-shaped protruding position at the lower end of the first cylinder 32 through the sliding groove, so as to prevent the second cylinder 33 from detaching from the first cylinder 32 when it slides downward.

[0044] The flow guiding structure 34 is provided with a flat plate 41, a flow hole 42 and a filter plate 43. The flat plates 41 are horizontally staggered in the flow hole 42. The filter plate 43 is provided between the two lowest flat plates 41 and blocks the water flowing upward from below.

[0045] Furthermore, the filter plate 43 is made of sponge material and has large gaps inside, which can block large particles from passing through. The filter plate 43 is located at the lower opening of the flow guiding structure 34, and the filter plate 43 can filter and block the water flowing upward through the opening of the flow guiding structure 34.

[0046] Furthermore, the staggered planar plates 41 can create a certain backflow obstruction effect on the water flow and discharge a certain amount of water flow that is higher than the position of the guide structure 34. The guide structure 34 and the outlet 31 are located in the upper part of the whole, reducing the contact with the soil below. When the upper part of the sleeve 12 is lifted into the water, it is mainly a mixture of mud and water.

[0047] In this invention, when the sleeve 12 is inserted downward into the soil, the outlet 31 and the guide structure 34 are misaligned. At this time, the sleeve 12 forms a water-blocking effect on the outside. When the first cylinder 32 is lifted upward, the second cylinder 33 and the first cylinder 32 slide relative to each other, and the outlet 31 is connected to the guide structure 34. At this time, the water inside the second cylinder 33 will be discharged to the outlet 31 through the guide structure 34 and flow out, so that the water inside can flow out when the sleeve 12 is lifted. At this time, the water flows upward from the position of the guide structure 34, and the staggered flat plates 41 block most of the soil from flowing upward. The filter plate 43 blocks large particles of impurities and sand to a certain extent. Then, most of the water is guided from the guide structure 34 to the outlet 31 for discharge, avoiding most of the water from being transferred with the soil when digging.

[0048] A method for using a drilling and grouting pile construction device for underwater engineering construction, based on the above-mentioned drilling and grouting pile construction device for underwater engineering construction, the specific method of use includes the following steps:

[0049] S1: The mechanical boom 4 and mechanical arm 2 are controlled by the cab on the excavator body 5 to push the rotary digging mechanism 1 at the lower end of the rotary rotator 3, and the rotary rotator 3 is controlled to rotate the rotary digging mechanism 1, so that the rotary digging mechanism 1 rotates downward. At this time, the opening and closing mechanism 11 causes the rotating plate 111 to tilt upward and rotate under the resistance of the underwater mud, and the fixed block 13 slides vertically in the track bar 16 through the outer slide plate 14 of the center rod 15, so that the mud and water enter above the opening and closing mechanism 11.

[0050] S2: When the fixed block 13 moves upward, the slide plate 14 slides upward in the track 16 and drives the sleeve 12 out of the water. At this time, the opening and closing mechanism 11 returns to the horizontal state under the gravity of the soil above to block the soil.

[0051] S3: After the soil is dug out, the soil moves the opening and closing mechanism 11 downward under gravity, while the lower end of the sleeve 12 is placed on the ground. Through the obstruction of the ground, the hollow groove of the central rod 15 is disengaged from the corresponding position of the force rod 123. Then, the outer side of the central rod 15 presses against the force rod 123, and the force rod 123 squeezes the transmission structure 122 under the elasticity of the spring 121, and drives the transmission structure 122 to rotate.

[0052] S4: The rotation of the transmission structure 122 causes the slide rod 24 to slide within the adjacent rotating plate 111, and drives the rotating plate 111 to tilt upward. At this time, the rotating plate 111 squeezes the soil upward and causes the rotating plate 111 and the conversion mechanism 112 to be misaligned, so that the soil falls downward from the misaligned position.

[0053] It should be noted that the above content merely illustrates the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, various improvements and modifications can be made without departing from the principle of the present invention, and all such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A construction device for underwater bored piles in engineering construction, characterized in that: The device includes a rotary drilling mechanism, a mechanical arm, a rotator, a mechanical boom, and a digging body. The mechanical boom swings up and down inside the digging body, the mechanical arm swings hydraulically at the outer end of the mechanical boom, and the rotator rotates at the lower end of the mechanical arm. The digging body is equipped with a control room, which drives the mechanical arm, rotator, and mechanical boom through electrical signals, and causes the rotator to clamp the rotary drilling mechanism and rotate downwards. The rotary drilling mechanism includes an opening and closing mechanism, a sleeve, a fixed block, a sliding plate, a central rod, and a track. The central rod is fixed to the lower end of the fixed block, and the central rod is located at the central axis of the sleeve. The sliding plate fixed to the outside of the central rod slides on the track inside the sleeve. The opening and closing mechanism is fixed to the lower end of the central rod. When the fixed block rotates downwards, the underwater mud blocks the opening and closing mechanism and causes it to tilt upwards to open and close. The opening and closing mechanism is provided with a rotating plate, a conversion mechanism and a sealing strip. There are four conversion mechanisms and four rotating plates, which are distributed in a circular array on the outside of the central rod. The rotating plate is hinged and rotates 60° on the outside of the central rod. The sealing strip is attached to the inside of the sleeve, and the outer side of the rotating plate is elastically pressed against the sealing strip. The side of the rotating plate is provided with a groove corresponding to the side of the conversion mechanism. The conversion mechanism includes a spring, a transmission structure, a force-bearing rod, and a trapezoidal plate. The force-bearing rod slides along a 10° inclined track within the trapezoidal plate. One end of the spring is fixed to the outside of the force-bearing rod, and the other end is fixed to the inside of the trapezoidal plate. When the force-bearing rod slides along the track, it compresses the spring, and the elasticity of the spring causes the force-bearing rod to press against the transmission structure, causing the transmission structure to rotate counterclockwise within the trapezoidal plate. The trapezoidal plate is located inside the sleeve. The outer side of the central rod has a hollow groove corresponding to the outer end of the force-bearing rod. When the central rod moves downward, the force-bearing rod slides from the hollow groove to the outside of the central rod, compressing the spring and causing the force-bearing rod to elastically press against the lower end of the transmission structure. At this time, the transmission structure rotates counterclockwise, causing the transmission structure to lift the rotating plate and tilt. The conductive structure includes a rotating ring, a metal plate, a force-bearing plate, and a sliding rod. The force-bearing plate and the metal plate are at right angles. One end of the force-bearing rod presses down on the force-bearing plate, causing the metal plate and the force-bearing plate to rotate around the rotating ring within the trapezoidal plate. The sliding rod is located at the outer end of the metal plate and slides in a groove on the side of the adjacent rotating plate, causing the rotating plate to tilt when it rotates.

2. The underwater drilling and grouting pile construction device according to claim 1, characterized in that: The sleeve is provided with an outlet, a first cylinder, a second cylinder, and a flow guiding structure. The outlet is inclined at 50° inside the first cylinder, and the flow guiding structure corresponding to the outlet is inclined inside the second cylinder. The second cylinder and the first cylinder slide vertically. When the first cylinder moves upward, the second cylinder slides downward under gravity, and the flow guiding structure connects with the outlet corresponding to the outlet.

3. The underwater drilling and grouting pile construction device according to claim 2, characterized in that, The flow guiding structure is provided with a flat plate, a flow hole and a filter plate. The flat plates are horizontally staggered in the flow hole. A filter plate is provided between the two lowest flat plates and blocks the water flowing upward from below.

4. A method of using a construction device for underwater bored piles in engineering construction, based on the construction device for underwater bored piles in engineering construction as described in claim 3, characterized in that: The specific usage method includes the following steps: S1: The mechanical boom and mechanical arm are controlled by the cab on the excavator to push the rotary digging mechanism at the lower end of the rotary unit, and the rotary unit is controlled to rotate the rotary digging mechanism, so that the rotary digging mechanism rotates downward. At this time, the opening and closing mechanism causes the rotating plate to tilt upward and rotate under the resistance of the underwater mud, and the fixed block slides vertically in the track through the outer slide plate of the central rod, so that mud and water enter the upper part of the opening and closing mechanism. S2: When the fixed block moves upward, the slide plate slides upward inside the track and drives the sleeve to leave the water. At this time, the opening and closing mechanism returns to the horizontal state under the gravity of the soil above and blocks the soil. S3: After the soil is excavated, the soil moves the opening and closing mechanism downward under gravity, while the lower end of the sleeve is placed on the ground. Through the obstruction of the ground, the hollow groove of the central rod is disengaged from the corresponding position of the force rod. Then, the outer side of the central rod presses against the force rod, and the force rod squeezes the transmission structure under the elasticity of the spring, and drives the transmission structure to rotate. S4: The rotation of the transmission structure causes the slide bar to slide within the adjacent rotating plate, and drives the rotating plate to tilt upward. At this time, the rotating plate squeezes the soil upward and causes the rotating plate and the conversion mechanism to misalign, so that the soil falls downward from the misaligned position.

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